baber/WOPTO huggingface dataset:
Patent GB-797830-A (GB)
Title: Improvements in and relating to electrical systems for modifying electric signals
IPC: G01S7/34
Filed: 1954-08-20
Abstract: 797,830. Radar. MORLE, C. W. (Philco Corporation). Aug. 20, 1954, No. 24291/54. Class 40 (7). The invention relates to apparatus which when supplied with a signal which varies as a function of one or more independent variables provides an output which is independent of at least one of said variables. Such apparatus may be used in a radar receiver to render the receiver output independent of decrease in amplitude due to range but otherwise directly related to the received signal. According to the invention the apparatus comprises means deriving a second signal which is a substantially logarithmic function of the input signal and means for adding to the second signal a further signal which is a substantially logarithmic function of the variable to be eliminated to produce the required output. Considering the application to radar it is known that the amplitude of the receiver signal output varies with target range according to the equation : where K is proportional to target reflectivity and the like but is independent of range (R). If the signal is applied to a logarithmic amplifier then: where B is a constant dependent on the amplifier. According to the invention there is added to this a further signal E c  = 2B log R to produce an output signal E r , where E r  = B log K, which is independent of range. In one embodiment of the invention the received echo signals in a pulse radar system are applied to a logarithmic amplifier and detector 7 to give the signal E out . Transmitter trigger pulses are applied to the grid of gas-filled valve 43 to cause it to conduct at the time instant corresponding to zero range to charge condenser 41. Thereafter the condenser discharges through resistor 42 and the potential across it at any given time is a reasonable approximation to the desired correction signal E c . The signals E out  and E c  are added by means of the resistance network 44, 45 and combine to form an output E r  independent of range but otherwise directly related to the received signal. An alternative method of deriving the correction signal may be employed, if, in addition to the periodic pulses, the input signal contains a component whose intensity is a function of the range. For example, in a radar system the target signals may be superimposed on a relatively continuous ground clutter which shows a sharp leading edge coincident in time with a transmitted pulse and then decreasing exponentially with time. A wave-shaping circuit insensitive to the pulses can then produce the correction signal from this clutter in the output of logarithmic amplifier 7, and mix it with the normal output signal. U.S.A. Specification 2,662,978 is referred to.
Patent GB-267819-A (GB)
Title: Machine for cutting fibre, wood, metal-sheathed and like non-flexible sheets
IPC: B27M1/00
Filed: 1926-10-02
Abstract: 267,819. Brettell, F. G., (Haskelite Manufacturing Corporation). Oct. 2, 1926. Cutting up, splitting, and slicing.-A machine for effecting parallel longitudinal cuts in panels A of fibre, wood or ply-wood comprises a frame 1 provided with parallel rails 2 on which a workcarrying table 3 is guided by flanged wheels 4. A rack 5 on the underside of the table is engaged by the teeth of a pinion 6 on a shaft driven through spur gearing by a shaft 12 which in turn is driven by a reversible belt-drive. The cutters 31, Fig. 7, are clamped by screws 33 in blocks 25 which are splined on shafts 16 so as to be transversely adjustable, the cutter-blocks being locked in the adjusted position by screws 29. The bearings 17 for the shaft 16 are clamped by plates 18 and screws to transverse rails 22, 23 on a box member 14, this mounting permitting lateral adjustment of the bearings so that the whole width of the work is accessible to the knives. Shoes 34, Fig. 7, which embrace the cutter blocks to prevent lateral "shake" are clamped to the rail 23 by screws 35. The rocker shafts for bringing the cutters into action are actuated by hand-levers 37. The driving pinioin may be provided with side flanges to guide the work-table rack.
Patent GB-393607-A (GB)
Title: Improvements in concentrating manganese ores
IPC: B03B1/00
Filed: 1931-08-31
Abstract: Manganese ores are calcined, preferably by roasting the dry crushed ore at a temperature of about 600 DEG  C. for approximately 15 minutes, prior to flotation or gravity concentration.  The calcined ore may be subjected to froth-flotation concentration, using as flotation agent a mixture of fish oil soap and a hydrocarbon, preferably dipentene or sulphurized dipentene. Alternatively the calcined ore may be subjected after grinding and sizing to gravity concentration in jigs or on tables, and the tailings from the gravity concentration may be further concentrated by froth flotation.  The preliminary roasting destroys the colloidal slime by dehydration and converts the manganese minerals into oxides.
Patent GB-894253-A (GB)
Title: Improvements relating to hand trucks
IPC: B62B1/14
Filed: 1957-08-01
Abstract: 894,253. Hand trucks. SLINGSBY Ltd., H. C., and SLINGSBY, G. Aug. 1, 1958 [Aug. 1, 1957; June 10, 1958], Nos. 24437/57 and 18476/58. Class 108(1). The load-supporting plate 1 of a hand truck has apertures 4 to accommodate lifting arms 3 which bear on the lower edges of the slots 4 and engage a similar slotted plate behind the plate 1. The tubular metal frame 1 has looped handles 8, main wheels 12 and auxiliary wheels 15. Specifications 749,545 and 794,439 are referred to.
Patent GB-501976-A (GB)
Title: Improvements in fire-bars
IPC: F23H3/02
Filed: 1937-09-07
Abstract: 501,976. Furnace grates. ESKE, F. W. Sept. 7, 1937, No. 24442. [Class 51 (i)] A furnace grate consists of transverse bars 5 arranged side-by-side and provided with upper and lower passages 8, 15 which constitute, when the bars are assembled, upper longitudinal passages for delivering air through openings 7 in the fuel supporting surfaces of the bars to the fuel bed and lower longitudinal passages for delivering air to the rear of the fuel bed. Arcuate ribs 10 depend from the upper portions of the firebars. The firebars may be employed with a firebridge described in Specification 480,835. Specifications 469,799 and 482,221 also are referred to.
Patent GB-1171249-A (GB)
Title: Electrolytic Cells
Inventor: NYSTROEM ERNST HOLGER BERTIL
IPC: C25B9/00
Filed: 1967-05-26
Abstract: 1,171,249. Electrolytic cells. E.H.B. B. NYSTROEM. May, 26, 1967, No.24491/67. Heading C7B. An electrolytic cell intended to operate under vacuum has an expandable container located therein so that under vacuum conditions within the cell the container is in an expanded condition and, upon collapse of the vacuum, the container contracts and enables the level of electrolyte to fall. The container, e.g. a sealed bag of plastics material may be located in a reservoir separate from, but communicating with, the electrolyte chamber, and may, in the expanded condition, substantially fill the reservoir. The invention may be applied to the cell described in Specification 1,128, 804 so as to uncover the electrodes and reduce or stop the reaction in the cell should the vacuum fail.
Patent GB-598871-A (GB)
Title: Improvements in oil phase polymerization
IPC: C08F283/01
Filed: 1945-09-21
Abstract: A mixture of an unsaturated alkyd resin made from a polyhydric alcohol and an unsaturated dicarboxylic acid or anhydride and a compound having a single terminal CH2= C.X-group where X is a negative group or atom, is polymerized at a temperature below 50 DEG C. in the presence of an oxygen containing polymerization catalyst and an aliphatic polyamine selected from alkene polyamines having at least one terminal primary amino-group and their aldehyde derivatives.  Polyhydric alcohols specified are ethylene glycol; diethylene glycol; triethylene glycol; propylene glycol; 2-2-dimethyl propanediol-1,3; glycerol; pentaerythritol; 1,3-butanediol; trimethylene glycol and 2-ethyl-2-butyl-butanediol-1,3; and as acids, maleic, fumaric, citraconic, itaconic, mesaconic, aconitic, chloromaleic and carbic acids may be used.  The alkyd resins may be modified with monohydric alcohols, saturated monocarboxylic acids, drying or semi-drying oils.  Monoenic compounds specified are styrene, vinyl chloride, vinyl acetate, esters of acrylic and methacrylic acids, acrylo- and methacrylo-nitriles.  As catalysts benzoyl peroxide, ascaridole, or peroxides of aliphatic acids are specified.  Aliphatic polyamines specified are ethylenediamine, N - (b  - hydroxyethyl) - ethylenediamine, 1,2 - propylenediamine, diethylenetriamine, triethylenetetramine, N1-N4-di-butylidene-triethylenetetramine, N-monosalicylidene diethylenetriamine, N, - N1 - disalicylidene ethylene diamine, N1 - N3 - disalicylidene diethylenetriamine, and N1 - N4 - disalicylidenetetramine.  Aldehydes which may be reacted with such aliphatic polyamines include formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, crotonaldehyde, furfural, benzaldehyde, salicylaldehyde and cinnamaldehyde.  Inhibitors such as t-butyl catechol may be present.  The process may be carried out in situ in making impregnated laminated paper, cloth or glass fibres. Specifications 540,167 and 540,168 are referred to.
Patent GB-448311-A (GB)
Title: Improvements in cinematographic projectors
IPC: G03B41/12
Filed: 1935-09-03
Abstract: 448,311. Kinematograph projectors. JARVA, Y. T., Lappeenranta, Finland. Sept. 3, 1935, No. 24555. [Class 97 (i)] In continuous-feed apparatus wherein the projection lens is reciprocated for compensation, and the return stroke is more rapid than the operative stroke, the lens mount is coaxial with a rod which is guided in a cam wheel chamber and carries a member engaging the track of the cam wheel. As shown, the lens components 16, 17, 18 are mounted in a tube 20 secured to a body 19 carrying a mirror 15 and fixed on a rod 24 provided with a roller 26 engaging the track 25 in a cam wheel 7 in a chamber 4. The wheel 7 is mounted on a shaft 2 driven by a belt pulley 5 and carrying a worm wheel 6 driving a sprocket 10. The film 28 is continuously drawn through a gate 13 by the sprocket 10, and is illuminated by light passing through a channel 11 and reflected by a mirror 12. The lens tube 20 may have three guide rails 23 engaging channel rails 22 in a cylindrical housing 21, and carries an apertured mask 43. The cam track may reciprocate the lens once during each revolution, the operative stroke taking three or four times as long as the return stroke, or may produce two or four reciprocations. Focusing is effected by adjusting the height of the gate arm 33 in a support 34 by a screw 36. The support 34 is pivoted on a pin 35 connected by a link 41 to a spring lock 40 associated with a safety shutter 38 ; when the film becomes loose owing to stoppage of its movement, the gate is turned to the position 13a, and the shutter 38 is closed, to reduce risk of fire. A second safety shutter 37 is closed magnetically if rotation of a roller 31, driven by the film, ceases, the roller being provided with a centrifugal switch 42 which then completes the circuit of a magnetic lock 39 for the shutter 37.
Patent GB-691732-A (GB)
Title: Improvements in and relating to apparatus for use in the reproduction of sound from sound records
IPC: G11B3/38
Filed: 1948-09-20
Abstract: 691,732. Supporting gramophone pick-ups. BRITISH BROADCASTING CORPORATION, PETRIE, R. D., and LOCKYER, J. S. Sept. 19, 1949 [Sept. 20, 1948], No. 24633/48. Class 40 (ii). A pick-up arm 11, Fig. 2, is attached to a carriage 12 supported by two pairs 17 of deepgroove ball-bearings arranged to run along a track rail 4. The facing surfaces of the outer races 18, Fig. 4, of the bearings are bevelled at 21 and engage the front and rear of the upper half of the rail 4, so as to be tilted by the wedging action of the rail to take up play in the bearings. The rail 4 is supported for rotation about its axis in ball-bearings 5, the heavy outer races 6 of which are resiliently supported by rubber diaphragms 9. The pick-up arm 11 carries an adjustable counterweight 14 which is engaged by an eccentricallymounted rod 22, rotatable by handle 24, to lift the pick-up 13 from the record surface.
Patent GB-667222-A (GB)
Title: Improvements in or relating to apparatus for transmitting indications or movements to a distance
Inventor: REDDING ROBERT JAMES
IPC: G08C19/06
Filed: 1949-09-27
Abstract: 667,222. Electric indicating systems. ELLIOTT BROS. (LONDON), Ltd. Aug. 31, 1950. [Sept. 27. 1949] No. 24809/49. Class 40 (i). [Also in Group XXXV] Relates to a system of the type disclosed in Specification 405,043 for converting the mechanical movement of a member, e.g. rotary displacement, into a corresponding voltage intensity variation for remote transmission over a line in which the member controls the position of a coil which embraces a first magnetic core 1 and extends into a gap in a second magnetic core 3, a winding on one core being connected to an A.C. supply and a winding on the other core being connected to the transmission line so that movement of the coil by the member varies the magnetic flux linking the coil and hence the output voltage ; alternatively both magnetic cores may be gapped, the coil being arranged to move in both gaps. In such a system the coil links the two cores for all positions of the controlling member so that a voltage output is produced even at the zero position of the member but according to the present invention the coil 6 is formed of a flat conductive strip shaped into a distorted figure-eight, one loop 7 being approximately quadrantal and the other 9 rectangular, the cross-over portions being mutually insulated and the coil being attached to a spindle 11 normal to the plane of the coil and connected to the controlling member, e.g. to Bourdon gauge, Figs. 1 and 2 (not shown), so that when the controlling member is in its zero position as shown both loops of the coil extend into the. gap in the second magnetic core 3 and there is zero coupling with the first magnetic core 1 since the currents induced in the two loops are in opposition, but as the coil is rotated towards the position, Fig. 1 (not shown), corresponding to the maximum displacement of the controlling member the loop 7 is moved further into the gap and the loop 9 is removed therefrom so that the currents induced in the two loops are of unequal magnitude and there is a resultant coupling between the two cores. As in Specification 405,043, the output winding may be connected to the transmission line via a rectifier and the input winding may be connected to the A.C. supply via a voltage regulating auto-transformer. The loop 9 of the coil may be arranged so that the rate of change of output voltage produces a linear relation between the deflections of the receiving instrument and movement of the controlling member or to compensate for non-linear effects in the over-all transmission.
Patent GB-1108043-A (GB)
Title: Production of epoxy compounds
Inventor: KOLLAR JOHN
IPC: C07C15/46
Filed: 1965-06-11
Abstract: Diene polymers are epoxidized by treatment with an organic hydroperoxide and, as catalyst, a compound from the group consisting of peracid forming and hydroxylation catalysts. Specified polymers are liquid or solid polybutadiene polyisoprene and ethylene-propylenecyclopentadiene terpolymers.  Specified hydroperoxides include cumene hydroperoxide, isobutane hydroperoxide, t-butyl hydroperoxide and ethyl benzene hydroperoxide.  The preferred catalysts are compounds of molybdenum, vanadium, tungsten and selenium e.g., molybdenum disulphide or naphthenate, tungstic acid, vanadium pentoxide or selenium dioxide. A solvent is desirable, hydrocarbons and their oxygenated derivatives being specified, while t-butanol is preferred.ALSO:An olefinic material containing at least 31 carbon atoms is epoxidized by treatment with an organic hydroperoxide and, as catalyst, a compound from the group consisting of per-acid forming and hydroxylation catalysts. Specified olefinic material is linseed oil, olive oil, cottonseed oil, tall oil glycerides, castor oil, corn oil, and butyl-polyglycol esters of unsaturated fatty acids, while the hydroperoxides may be those of formula ROOH, where R is an aralkyl, aralkenyl, hydroxyaralkyl, hydroxyalkyl, cycloalkyl, cycloalkenyl, hydroxycycloalkyl, and alkyl groups having three to twenty carbon atoms, the preferred being those from cumene, ethylbenzene and isobutane.  The epoxidation catalysts include compounds of Ti, V, Cb, Cr, Se, Zr, Nb, Mo, Te, Ta, W, Re and U, those of W, Mo, V and Se being preferred-specified are Mo2O3, MoO2, MoO3, molybdic acid, the molybdenum chlorides and oxychlorides, molybdenum fluoride, phosphate and sulphide, phosphomolybdic acid and its sodium and potassium salts.  An inert solvent may be present.  In an example, 3.6 grams of 91% cumene hydroperoxide, 0.07 gm. molybdenum naphthenate solution (containing 5% Mo) and 11.4 grm. linseed oil are reacted at atmospheric pressure for 3 hours at 90 DEG C., when 92.8% of the peroxide is converted and epoxidized linseed oil produced.  Organic hydroperoxides are prepared by reacting oxygen-containing gas with an aralkyl hydrocarbon or an alkyl hydrocarbon in the presence of an oxidation initiator.  Specified hydrocarbons are ethyl-benzene, cumene or isobutane. Unreacted hydrocarbon may be recycled and the alcohol by-product alpha-phenyl-ethanol, cumyl alcohol and t.-butyl alcohol respectively used as such or converted to more useful by-products.  Thus, alpha-phenyl-ethanol may be dehydrated to styrene, dehydrogenated to acetophenone, or hydrogenated to ethyl benzene which may then be converted to its hydroperoxide and used for the epoxidization. Similarly the cumyl alcohol may be converted to cumene and hence to cumene hydroperoxido or the cumene alcohol may be converted to alpha-methyl styrene, and the t.-butanol to 1-butane and then by hydrogenation to isobutane.
Patent GB-845817-A (GB)
Title: Continuous production of slivers from textile fibres
IPC: D01G23/08
Filed: 1958-08-01
Abstract: 845,817. Preparing fibres for spinning. TOYO BOSEKI KABUSHIKI KAISHA, and HOWA KOGYO KABUSHIKI KAISHA. Aug. 1,  1958 [Aug. 5, 1957], No. 24914/58. Classes 120(1) and 120(3). Slivers are produced continuously from baled material in apparatus for opening, mixing and blending fibres. which are then carried by lattice distributers to tower hoppers associated with carding machines. Fibres from a bale breaker 6 are mixed and weighed in a hopper mixer 9 and a predetermined amount is continuously fed to an opener 10 from which they are pneumatically conveyed through a conduit 11 to a condenser hopper feeder combination 12. A feeler fork in the hopper feeder is arranged to stop all preceding units when the hopper reserve box is full. From the hopper feeder 12, fibres are carried along a spiked conveyer within an enclosure 28 to be deposited on branched spiked conveyers within enclosures 30, 30a, 30b. The branch conveyers carry the fibres to tower hoppers 32, each associated with a carding machine and having delivery rollers to deliver a uniform web of fibres to a belt conveyer on the carding machine. Webs from a series of carding machines pass along a conveyer 49 to a draft frame 52 at which the drawn slivers are coiled in cans. Each tower hopper may have a photo-electric device to shut off the supply of fibres to the tower when it is full, or one tower only in each line of towers may be so equipped.
Patent GB-186067-A (GB)
Title: Safety locking device for valves controlling pipe-lines
IPC: F16K17/00
Filed: 1922-09-15
Abstract: 186,067. Laguesse, E., and Winand, F. Sept. 16, 1921, [Convention date]. Locking.-A safety locking device for use in valves controlling pipe-lines is arranged to lock the main valve closed in the event of an abnormal fall of pressure occurring in the outlet subsequent to the closing of the main valve. In the form shown, the plug 3 of a main gas-cock has a slot 16 adapted to co-operate with a locking bolt 12 guided at 13 and 14 and provided with an actuating float 10 and a pull rod 11. The float works in a cylindrical chamber 9 formed on a cover 8 and extending nearly to the bottom of an outer vessel 1 containing oil or other liquid. A pipe 7 leads from the outlet 5 to the top of the outer chamber so that while normal pressure is maintained in the outlet the float and locking bolt are held in the raised position leaving the main valve free to be actuated. To compensate for normal leakage, a pipe 17 is connected to the inlet and is bent over to submerge its outlet so that an abnormal rise of liquid in the outer vessel seals the pipe. In a. modification, the axis of the locking bolt is arranged at right angles to that of the cock. A lever may be interposed between the float and locking bolt.
Patent GB-246212-A (GB)
Title: Improvements in and relating to magneto electric machines
IPC: F02P1/00
Filed: 1924-10-21
Abstract: 246,212. British Thomson-Houston Co., Ltd., Griffiths, L., and Morton, C. Oct. 21, 1924. Magneto-electric machines.-To prevent ionized air and oil reaching the contactbreaker chamber in a magneto-electric machine, a sealing gland is located in the clearance space between the base of the contact-breaker and the stem of the contactbreaker cam. As shown, a ring 10 is pressed on the stem 9 of the cam 6 mounted on the rotor shaft 1. The ring 10 is grooved to receive a felt washer 11 fitting against the base 8 of the contact-breaker. A distance piece 12 is provided between the ring 10 and gear wheel 3 driving the distributor 5.
Patent GB-1100066-A (GB)
Title: Combustion chamber wall formed from parallel tubes
IPC: F22B37/14
Filed: 1966-06-06
Abstract: 1,100,066. Junction pieces. SULZER BROS. Ltd. 6 June, 1966 [15 June, 1965], No. 25125/66. Heading F2G. [Also in Division F4] A junction piece 3 for joining two coaxial tubes without establishing fluid communication between them, is formed with a K-shape having a centrally situated blocked portion 15 with spigots 20, 21 on either side. The spigots extend at differing angles to the axis 16 of the piece, which may be provided with integral fins 8.
Patent GB-796723-A (GB)
Title: Cobalt-containing dyestuffs of the benzene-monoazo-amino-crotonic acid arylide series
IPC: C09B45/20
Filed: 1956-08-16
Abstract: b -Aminocrotonic acid arylides are made by treating acetoacetic acid arylides with aqueous ammonia solutions.  The specified arylides are b -aminocrotonic acid anilide, o-anisidide, o-chloroanilide, o-toluidide and a -naphthyl amide.  The products are dyestuff intermediates (see Group IV (c)).  Examples show the preparation of the o-anisidide and o-chloroanilide. Specification 4406/92, [Class II], is referred to.ALSO:The invention comprises cobalt complexes of dyestuffs that are free from sulphonic or carboxylic acid groups and which are of formula <FORM:0796723/IV (b)/1> where X is H or a substituent, R1 is H or an alkyl, aralkyl or aryl radicle and R2 is a benzene or naphthalene residue. They are made by conventional methods by cobalting the product obtained by diazotizing an appropriate 2-aminophenol and coupling, in a neutral or alkaline medium, with the desired b -aminocrotonic acid arylide component.  Diazo components specified are 2-hydroxyaniline-5-sulphonamide, -sulphon-methyl- and n-butylamides and -sulphon-anilide, -o-chloranilide, -o-toluidide, o-anisidide and -benzyl amide, 2-hydroxyaniline - 4 - sulphon - anilide and its 5-methyl derivative, 2-hydroxy-1-aniline-5-chloro-4-sulphonamide, 2-hydroxy-1-aniline-3-nitro-5-sulphonamide.  Specified coupling components are b -aminocrotonic acid anilide, o-anisidide, o-chloroanilide, o-toluidide and a -naphthyl amide.  Cobalting may be effected in the presence of o,o1-dihydroxy azo dyestuffs. The dyestuffs dye wool and similar materials from neutral to weakly acid baths in yellow or brown shades.  In examples which illustrate the preparation of the dyestuffs and their use in dyeing wool, the components used are chosen from those specified above.  Specification 4406/92 is referred to.